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CVE-2017-8806

Estado: ModificadaMedia (5.5)—

The Debian pg_ctlcluster, pg_createcluster, and pg_upgradecluster scripts, as distributed in the Debian postgresql-common package before 181+deb9u1 for PostgreSQL (and other packages related to Debian and Ubuntu), handled symbolic links insecurely, which could result in local denial of service by overwriting arbitrary files.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Postgresql — Postgresql

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2017-8806",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 3.6,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:N/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 4.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@debian.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "PostgreSQL-related scripts that are specific to Debian and Ubuntu",
          "versions": [
            {
              "status": "affected",
              "version": "PostgreSQL-related scripts that are specific to Debian and Ubuntu"
            }
          ]
        }
      ]
    }
  ],
  "published": "2017-11-13T09:29:00.403",
  "references": [
    {
      "url": "http://metadata.ftp-master.debian.org/changelogs/main/p/postgresql-common/postgresql-common_181+deb9u1_changelog",
      "tags": [
        "Broken Link",
        "Issue Tracking",
        "Third Party Advisory"
      ],
      "source": "security@debian.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/101810",
      "tags": [
        "Broken Link",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "security@debian.org"
    },
    {
      "url": "https://usn.ubuntu.com/usn/usn-3476-1/",
      "tags": [
        "Issue Tracking",
        "Third Party Advisory"
      ],
      "source": "security@debian.org"
    },
    {
      "url": "https://www.debian.org/security/2017/dsa-4029",
      "tags": [
        "Issue Tracking",
        "Third Party Advisory"
      ],
      "source": "security@debian.org"
    },
    {
      "url": "http://metadata.ftp-master.debian.org/changelogs/main/p/postgresql-common/postgresql-common_181+deb9u1_changelog",
      "tags": [
        "Broken Link",
        "Issue Tracking",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/101810",
      "tags": [
        "Broken Link",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://usn.ubuntu.com/usn/usn-3476-1/",
      "tags": [
        "Issue Tracking",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.debian.org/security/2017/dsa-4029",
      "tags": [
        "Issue Tracking",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-59"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Debian pg_ctlcluster, pg_createcluster, and pg_upgradecluster scripts, as distributed in the Debian postgresql-common package before 181+deb9u1 for PostgreSQL (and other packages related to Debian and Ubuntu), handled symbolic links insecurely, which could result in local denial of service by overwriting arbitrary files."
    },
    {
      "lang": "es",
      "value": "Los scripts de Debian pg_ctlcluster, pg_createcluster y pg_upgradecluster, tal y como se distribuyen en el paquete de Debian postgresql-common anterior a 181+deb9u1 para PostgreSQL (y otros paquetes relacionados con Debian y Ubuntu), manipularon vínculos simbólicos de forma no segura, lo que podría desembocar en una denegación de servicio local sobrescribiendo archivos arbitrarios."
    }
  ],
  "lastModified": "2026-06-17T01:26:59.713",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:postgresql:postgresql:-:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "ECC070DF-4131-43BA-B975-907023E0D39F"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "B5A6F2F3-4894-4392-8296-3B8DD2679084"
            },
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "F7016A2A-8365-4F1A-89A2-7A19F2BCAE5B"
            },
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:17.04:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "588D4F37-0A56-47A4-B710-4D5F3D214FB9"
            },
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "9070C9D8-A14A-467F-8253-33B966C16886"
            },
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43"
            },
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "sourceIdentifier": "security@debian.org"
}